2007-09-27 03:16:47 · 3 answers · asked by cmpunkbohemia 1 in Science & Mathematics ➔ Chemistry
methane has a molecular weight of 12+4*1 =16
3.2g is in mole 3.2/16= 0.2 mole
the number of methane molecules is 6.022 *10^23 in 1 mole
a molecule of methane has 10 electrons (6 for 1 carbon and 4 for the atoms H)
so number of electrons in 3.2 g
0.2*10*6.022*10^23 = 2*6.022*10^23
= 1.244*10^24 electrons
2007-09-27 03:24:22 · answer #1 · answered by maussy 7 · 0⤊ 0⤋
there is a total of 10 electrons
4 electrons in the 4 hydrogen atoms
and 6 electrons in the Carbon atom
2007-09-27 03:22:15 · answer #2 · answered by Double R 3 · 0⤊ 0⤋
A mole is 6.02 * 10^23...............
and you know how many electrons are in the molecule.
how many grams methane in a mole? Divide.........
..
2007-09-27 03:25:25 · answer #3 · answered by muddypuppyuk 5 · 0⤊ 0⤋